He's the lone survivor of a lost civilization thrust into ours. A giant storm tosses ashore a being who is both human and a creature from the deep. Mark Harris is the name given to him by the astonished scientists who study and protect their remarkable find. Harris is equally astonished, a fish out of water eager to learn about us. Patrick Duffy (a year before beginning his legendary run on Dallas) plays the Atlantean in the origin movie that (along with three more films) preceded the cult classic Man from Atlantis TV series. In this adventure, Harris uses his amazing underwater abilities to save mankind from a madman's (Victor Buono) plot to launch missiles from all the world's nuclear submarines!